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标题: ERROR 2006 (HY000) at line 7130: MySQL server has gone away [打印本页]

作者: jiawang    时间: 2024-10-8 12:01
标题: ERROR 2006 (HY000) at line 7130: MySQL server has gone away
本帖最后由 jiawang 于 2024-10-8 12:01 编辑

环境:
Os:Centos 7
DB:mysql 5.7.39

导入大量数据的时候报错误:
[root@localhost ~]# mysql -h localhost -uroot -pmysql --default-character-set=utf8 -D dev_test</tmp/db_test_20240723
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2006 (HY000) at line 7130: MySQL server has gone away
[root@localhost ~]#


解决办法:
mysql> show variables like '%max_allowed_packet%';
+--------------------------+------------+
| Variable_name            | Value      |
+--------------------------+------------+
| max_allowed_packet       | 33554432   |
| slave_max_allowed_packet | 1073741824 |
+--------------------------+------------+
2 rows in set (0.00 sec)

mysql> show variables like '%interactive_timeout%';
+---------------------+-------+
| Variable_name       | Value |
+---------------------+-------+
| interactive_timeout | 86400 |
+---------------------+-------+
1 row in set (0.00 sec)

mysql> show variables like '%wait_timeout%';
+--------------------------+----------+
| Variable_name            | Value    |
+--------------------------+----------+
| innodb_lock_wait_timeout | 120      |
| lock_wait_timeout        | 31536000 |
| wait_timeout             | 86400    |
+--------------------------+----------+
3 rows in set (0.00 sec)


查看wait_timeout和interactive_timeout这种都正常,就是max_allowed_packet=32MB 应该是设置小了,尝试设置大些,问题解决.



set global max_allowed_packet=1073741824;






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